Overview
Here is a standard "combustion" spud gun. The cannon
is a four inch chamber to two inch barrel. ABS pipe and a BBQ sparker is
used in this particular model.
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Parts List
|
Qty. |
Part: |
|
1 |
4ft. of 2"
ABS Pipe |
|
1 |
4" to
2" Bell Reducer (ABS) |
|
1 |
18" of
4" ABS Pipe |
|
1 |
4"
ABS Female Adapter |
|
1 |
4"
ABS Cleanout Plug |
|
1 |
BBQ igniter
ignition set-up (see
ignition
page) |
|
1 |
Can of ABS
glue |
All of these supplies can be purchased
from a local hardware store.
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Instructions
Construct the cannon as shown in the diagram bellow:
Remember, before you glue the
cannon together, it is a good idea to mount your ignition set-up. Look
at this
page for details...
Let the glue dry for 24 hours before you fire your cannon.
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Firing
Your Cannon
To fire the cannon: Ram a potato in the
barrel, open up the cleanout plug, spray about 4 seconds worth of hair
spray, screw in the cleanout plug and flip the igniter.
Remember these types of
cannons are not that reliable and do not usually fire at a constant
range. Sometimes the cannon will fire a couple hundred yards, and
sometimes only a hundred. Experiment and see what works best for you.
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Modifications
The barrel can be detachable so that
different sized barrels can be used. Such as a 4" barrel for
shooting toilet paper. To make the barrel detachable cut your original
barrel about two inches away from the chamber. Then glue on a 2 in. male
adapter. Glue a 2 in. female adapter on your left over barrel and the
two can now be screwed together.
NOTE: Make sure you
use the appropriate glue. PVC glue for PVC pipe, ABS glue for ABS
pipe.
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Recoil
